68-491 12.5 mm Dia. Zinc Selenide Protective Flat Window; t=2 mm Uncoated

The 68-491 is a 12.5 mm diameter Zinc Selenide (ZnSe) protective flat window, with a thickness of 2 mm and no coating. This window is sourced from Edmund Optics, a reputable vendor in the optical industry.

As a flat window, this component is designed to protect optical surfaces from environmental hazards such as dust, dirt, and moisture, without introducing any optical power. Its base shape is circular, making it suitable for a wide range of applications where a circular aperture is required.

The window is made of Zinc Selenide, a material with a Material ID of 'znse marple-1964'. Zinc Selenide is known for its excellent optical properties, including high transparency in the infrared region and a refractive index of 2.407 at 587.6 nm, the wavelength specified for this item.

The window's shape is that of a thin lens, indicating that it is relatively thin compared to its diameter. This makes it ideal for applications where minimal thickness is required. The window is uncoated, meaning it does not have any anti-reflective or other coatings. This may be suitable for applications where such coatings are not necessary or desirable.

According to the provided item data, this window is in stock and available for immediate purchase. For more information, including detailed specifications and purchasing options, please refer to the vendor's website using the provided weblink.